Heat 5 quarts of water to 165-170F. Mix in 6-row, rye and munich malt and stabilize temperature at 148-155F. Hold temperature for 45 minutes to 1 hour. Meanwhile, heat 7 quarts of water to 170-175F. Dump grain into colander and slowly rinse grains with 7 quarts of water into your brew pot. This liquid will constitute much of your brewing liquor. Top up pot to your normal brewing level.